Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task where more than two parties wish to establish a common secret key. A composition of bipartite quantum key distribution protocols can accomplish this task. However, the existence of multipartite quantum correlations allows for new and potentially more efficient protocols, to be applied in future quantum networks. Here, we review the existing quantum CKA protocols based on multipartite entanglement, both in the device-dependent and the device-independent scenario.
@article{arxiv.2003.10186,
title = {Quantum Conference Key Agreement: A Review},
author = {Gláucia Murta and Federico Grasselli and Hermann Kampermann and Dagmar Bruß},
journal= {arXiv preprint arXiv:2003.10186},
year = {2020}
}
Comments
15 pages, 4 figures. Contribution to special issue "Advancing quantum technologies - chances and challenges" of Advanced Quantum Technologies. v2: small changes, new citations included, close to the published version